<div class="row-content am-cf">
    <div class="row">
        <div class="am-u-sm-12 am-u-md-12 am-u-lg-12">
            <div class="widget am-cf">
                <form id="my-form" class="am-form tpl-form-line-form" enctype="multipart/form-data" method="post">
                    <div class="widget-body">
                        <fieldset>
                            <div class="widget-head am-cf">
                                <div class="widget-title am-fl">添加城市</div>
                            </div>
                            <div class="am-form-group">
                                <label class="am-u-sm-3 am-u-lg-2 am-form-label form-require">上级名称 </label>
                                <div class="am-u-sm-9 am-u-end">
                                    <select name="region[pid]"
                                            data-am-selected="{searchBox: 1, btnSize: 'sm'}">
                                        <option value="0">顶级</option>
                                        <?php if (isset($list)): foreach ($list as $item): ?>
                                            <option value="<?= $item['id'] ?>" 
                                                <?= $model['pid'] == $item['id'] ? 'selected' : '' ?> > 
                                                <?= $item['name'] ?></option>
                                        <?php endforeach; endif; ?>
                                    </select>
                                </div>
                            </div>
                            <div class="am-form-group">
                                <label class="am-u-sm-3 am-u-lg-2 am-form-label form-require">城市名称 </label>
                                <div class="am-u-sm-9 am-u-end">
                                    <input type="text" class="tpl-form-input" name="region[name]"
                                           value="<?= $model['name'] ?>" required>
                                </div>
                            </div>
                            <div class="am-form-group">
                                <input type="hidden" name="region[level]" value="<?= $model['level'] ?>">
                            </div>
                            <div class="am-form-group">
                                <div class="am-u-sm-9 am-u-sm-push-3 am-margin-top-lg">
                                    <button type="submit" class="j-submit am-btn am-btn-secondary">提交
                                    </button>
                                </div>
                            </div>
                        </fieldset>
                    </div>
                </form>
            </div>
        </div>
    </div>
</div>

<script>
    $(function () {

        /**
         * 表单验证提交
         * @type {*}
         */
        $('#my-form').superForm();

        $("select[name='region[pid]']").change(function(){
           var  level = $(this).find("option:selected").attr("level");
           if (level > 0) {
            $("input[name='region[level]']").val(parseInt(level) + 1);
           }
        });
    });
</script>
